All rights reserved.
This code is derived from software contributed to Berkeley by
Ken Arnold.
Redistribution and use in source and binary forms are permitted
provided that the above copyright notice and this paragraph are
duplicated in all such forms and that any documentation,
advertising materials, and other materials related to such
distribution and use acknowledge that the software was developed
by the University of California, Berkeley. The name of the
University may not be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
@(#)strfile.8 5.7 (Berkeley) 09/07/89
unstr source_file
The output file, if not specified on the command line, is named source_file.out.
The options are as follows:
-c char Change the delimiting character from the percent sign to char .
-i Ignore case when ordering the strings.
-o Order the strings in alphabetical order. The offset table will be sorted in the alphabetical order of the groups of lines referenced. Any initial non-alphanumeric characters are ignored. This option causes the STR_ORDERED bit in the header str_flags field to be set.
-r Randomize access to the strings. Entries in the offset table will be randomly ordered. This option causes the STR_RANDOM bit in the header str_flags field to be set.
-s Run silently; don't give a summary message when finished.
-x Note that each alphabetic character in the groups of lines is rotated 13 positions in a simple caesar cypher. This option causes the STR_ROTATED bit in the header str_flags field to be set.
The format of the header is:
#define VERSION 1 unsigned long str_version; /* version number */ unsigned long str_numstr; /* # of strings in the file */ unsigned long str_longlen; /* length of longest string */ unsigned long str_shortlen; /* length of shortest string */ #define STR_RANDOM 0x1 /* randomized pointers */ #define STR_ORDERED 0x2 /* ordered pointers */ #define STR_ROTATED 0x4 /* rot-13'd text */ unsigned long str_flags; /* bit field for flags */ char str_delim; /* delimiting character */
All fields are written in network byte order.
The purpose of unstr is to undo the work of strfile . It prints out the strings contained in the file source_file in the order that they are listed in the header file source_file .dat to standard output. It is possible to create sorted versions of input files by using -o when strfile is run and then using unstr to dump them out in the table order.